Landscape orientation.

Signal/src/AppDelegate.m

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 #import "AppDelegate.h"
@@ -946,6 +946,16 @@ static NSTimeInterval launchStartedAt;
 - (UIInterfaceOrientationMask)application:(UIApplication *)application
     supportedInterfaceOrientationsForWindow:(nullable UIWindow *)window
 {
+    if (!window) {
+        // If `window` is nil, be permissive.  Otherwise orientation
+        // gets messed up during presentation of windows.
+        return UIInterfaceOrientationMaskAllButUpsideDown;
+    }
+
+    if (window == self.windowManager.menuActionsWindow) {
+        return UIInterfaceOrientationMaskAllButUpsideDown;
+    }
+
     if (self.windowManager.rootWindow != window) {
         return UIInterfaceOrientationMaskPortrait;
     }

Signal/src/ViewControllers/MenuActionsViewController.swift

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 import Foundation
@@ -92,8 +92,8 @@ class MenuActionsViewController: UIViewController, MenuActionSheetDelegate {
 
     // MARK: Orientation
 
-    override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
-        return .portrait
+    override public var supportedInterfaceOrientations: UIInterfaceOrientationMask {
+        return .allButUpsideDown
     }
 
     // MARK: Present / Dismiss animations

SignalMessaging/utils/OWSWindowManager.h

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 NS_ASSUME_NONNULL_BEGIN
@@ -27,6 +27,7 @@ extern const UIWindowLevel UIWindowLevel_Background;
 - (void)setupWithRootWindow:(UIWindow *)rootWindow screenBlockingWindow:(UIWindow *)screenBlockingWindow;
 
 @property (nonatomic, readonly) UIWindow *rootWindow;
+@property (nonatomic, readonly) UIWindow *menuActionsWindow;
 
 - (void)setIsScreenBlockActive:(BOOL)isScreenBlockActive;
 

SignalMessaging/utils/OWSWindowManager.m

@@ -1,5 +1,5 @@
 //
-//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
+//  Copyright (c) 2019 Open Whisper Systems. All rights reserved.
 //
 
 #import "OWSWindowManager.h"
@@ -65,11 +65,14 @@ const UIWindowLevel UIWindowLevel_MessageActions(void)
     return CGFLOAT_MAX - 100;
 }
 
+#pragma mark -
 
 @interface MessageActionsWindow : UIWindow
 
 @end
 
+#pragma mark -
+
 @implementation MessageActionsWindow
 
 - (UIWindowLevel)windowLevel
@@ -83,6 +86,8 @@ const UIWindowLevel UIWindowLevel_MessageActions(void)
 
 @end
 
+#pragma mark -
+
 @implementation OWSWindowRootViewController
 
 - (BOOL)canBecomeFirstResponder
@@ -99,10 +104,14 @@ const UIWindowLevel UIWindowLevel_MessageActions(void)
 
 @end
 
+#pragma mark -
+
 @interface OWSWindowRootNavigationViewController : UINavigationController
 
 @end
 
+#pragma mark -
+
 @implementation OWSWindowRootNavigationViewController : UINavigationController
 
 #pragma mark - Orientation